Tourney's most impressive teams

Rondae Hollis-Jefferson and the Wildcats have been impressive in two tourney victories. Jeff Gross/Getty Images

There’s no doubt there have been a lot of top-notch performances so far in the NCAA tournament. Brackets across America were ruined when teams including Dayton, Stephen F. Austin and Mercer upset higher-seeded favorites. Other popular national title picks faced little to no trouble getting through the initial weekend.

As we head toward an intriguing set of Sweet 16 games, which four teams have impressed me the most so far? And can those teams sustain it? Let's take a look.

Baylor Bears

NCAA tournament wins: Nebraska, Creighton

Sweet 16 opponent: Wisconsin

Baylor was extremely impressive this past weekend. Its 1-1-3 zone distorted passing lanes and it was able to get deflections. The Bears force opponents to take contested 3s or tough 2s. They do a great job protecting the front of the rim and stopping you from getting to the basket. Their ability to rebound the ball on both ends enables them to limit opponents to one shot, as well as get extra possessions and easy scoring opportunities.